Pressure regulating valve with pneumatic pressure sensing assembly

Abstract

The utility model discloses a pressure regulating valve with a pneumatic pressure sensing assembly, which belongs to the technical field of pressure regulating valves and comprises an inlet valve body and an outlet valve body, an inlet flow channel is arranged at the front end of the inlet valve body, a protruding arc throttling port is arranged at the tail end of the inlet flow channel, and an outlet flow channel is arranged at the rear end of the outlet valve body. A movable seat is arranged on the inner side of the inlet valve body, a fixed seat is arranged on the inner side of the outlet valve body, the center of the side, away from the fixed seat, of the movable seat is connected with a lifting valve element, the lifting valve element extends to the inlet flow channel and is fixedly connected with a valve seat in the inlet flow channel, and an inflation structure is arranged between the fixed seat and the movable seat. And the fixed seat and the movable seat are connected at the edge of the outer ring through a corrugated pipe. Through the movable base and the fixed base which are connected through the corrugated pipe, the size of the throttling opening is accurately adjusted, and balance control over the pressure of an outlet runner is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of pressure regulating valve technology, specifically relating to a pressure regulating valve with a pneumatic pressure sensing component. Background Technology

[0002] In existing fluid transport systems, pressure regulating valves are key components for controlling gas pressure and flow rate. However, traditional pressure regulating valves are either large in size or structurally complex. Most pressure sensing mechanisms are diaphragm sensors, which cannot sensitively detect changes in outlet flow channel pressure to adjust the balance pressure, resulting in pressure regulation lag or unstable outlet flow channel pressure, affecting the normal operation of the entire system. Summary of the Invention

[0003] To address the aforementioned problems, this utility model discloses a pressure regulating valve with a pneumatic pressure sensing component. The valve has a simple structure, with a movable seat and a fixed seat connected by a bellows. By sensing the gas pressure in the outlet flow channel, the valve promptly feeds back to the movable seat inside the pressure regulating valve, enabling the valve core and seat to respond quickly and precisely adjust the size of the throttling orifice, thereby adjusting the inlet flow channel pressure and achieving balanced control of the outlet flow channel pressure.

[0004] To achieve the above objectives, the specific technical solution of this application is as follows:

[0005] A pressure regulating valve with a pneumatic pressure sensing component includes an inlet valve body and an outlet valve body. The inlet valve body has an inlet flow channel at its front end and a protruding arc-shaped throttling orifice at its end. The outlet valve body has an outlet flow channel at its rear end. A movable seat is provided inside the inlet valve body, and a fixed seat is provided inside the outlet valve body. A lifting valve core is centrally connected to the side of the movable seat away from the fixed seat. The lifting valve core extends into the inlet flow channel and a valve seat is fixedly connected to the lifting valve core within the inlet flow channel. The end of the valve seat near the throttling orifice is a conical surface. An inflation structure is provided between the fixed seat and the movable seat. The fixed seat and the movable seat are connected by a bellows at their outer edges.

[0006] Based on the above technical features, the movable seat further includes a movable base and a movable cavity, the fixed seat is provided with a mating cavity that matches the movable cavity, the movable cavity has a hollow cavity facing the mating cavity, the fixed seat is connected to a protruding seat on the side facing the hollow cavity, the inflation structure includes an inflation hole provided in the protruding seat, and a first sealing screw is provided at the front end of the inflation hole; the movable base and the fixed seat are connected at the edge by a corrugated pipe.

[0007] Based on the above technical features, the fixed seat is further provided with three claws in the circumferential direction, and the claws are embedded in matching slots at the connection between the inlet valve body and the outlet valve body.

[0008] Based on the above technical features, the inlet valve body and the outlet valve body are further connected by welding.

[0009] Based on the above technical features, furthermore, a spring adjusting seat and a spring are provided in the hollow cavity outside the protruding seat, and a support seat is provided at the bottom of the mating cavity between the spring adjusting seat and the mating cavity.

[0010] Based on the above technical features, furthermore, a second sealing screw is provided at the rear end of the inflation hole to further seal the inflation hole and prevent gas leakage.

[0011] Based on the above technical features, preferably, a support O-ring is provided between the support seat and the protruding seat.

[0012] Based on the above technical features, a bellows support ring is further provided at the connection between the fixing seat and the bellows.

[0013] Compared with the prior art, the beneficial effects of this application are as follows:

[0014] This application has a simple structure. The movable seat and the fixed seat are connected by a bellows. By sensing the gas pressure in the outlet flow channel, the pressure is fed back to the movable seat inside the pressure regulating valve in a timely manner, so that the lifting valve core and valve seat can respond quickly and accurately adjust the size of the throttling orifice, thereby adjusting the pressure in the inlet flow channel and thus achieving balanced control of the pressure in the outlet flow channel.

[0015] The air-filling structure between the movable seat and the fixed seat, as well as the bellows connection method, enable the pressure regulating valve to have good stability and reliability during operation, effectively avoiding valve body damage or leakage caused by pressure fluctuations. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a pressure regulating valve with a pneumatic pressure sensing component according to the present invention.

[0017] Figure 2 This is a partial structural diagram of A in this utility model;

[0018] List of identifiers in attached diagrams:

[0019] 1. Inlet valve body; 101. Inlet flow channel; 102. Throttling port; 2. Outlet valve body; 201. Outlet flow channel; 3. Movable seat; 301. Movable base; 302. Movable cavity; 303. Hollow cavity; 4. Fixed seat; 401. Protruding seat; 5. Lifting valve core; 6. Valve seat; 7. Inflation structure; 701. Inflation hole; 702. First sealing screw; 703. Second sealing screw; 8. Bellows; 9. Claw; 10. Slot; 11. Spring adjusting seat; 12. Spring; 13. Support O-ring; 14. Support seat; 15. Bellows support ring. Detailed Implementation

[0020] The present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are for illustrative purposes only and are not intended to limit the scope of the invention.

[0021] It should be noted that the terms "upper," "lower," "left," "right," "front," and "rear" used in the following description refer to the directions shown in the accompanying drawings, while the terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively. Furthermore, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] like Figure 1 As shown, a pressure regulating valve with a pneumatic pressure sensing component includes an inlet valve body 1 and an outlet valve body 2. The inlet valve body 1 has an inlet flow channel 101 at its front end and a protruding arc throttling orifice 102 at its end. The outlet valve body has an outlet flow channel 201 at its rear end.

[0023] The inlet valve body 1 is provided with a movable seat 3 on its inner side, and the outlet valve body 2 is provided with a fixed seat 4 on its inner side. The movable seat 3 is connected to the center of the side away from the fixed seat with a lifting valve core 5. The lifting valve core 5 extends into the inlet flow channel 101. The lifting valve core 5 is fixedly connected to a valve seat 6 in the inlet flow channel 101. The end of the valve seat 6 near the throttling orifice is a conical surface. An inflation structure 7 is provided between the fixed seat 3 and the movable seat 4. The fixed seat 3 and the movable seat 4 are connected by a bellows 8 at the outer edge.

[0024] Furthermore, the movable seat 3 includes a movable base 301 and a movable cavity 302. The movable cavity 302 is located at the center of the movable base. The fixed seat 4 is provided with a mating cavity that matches the movable cavity. The movable cavity has a hollow cavity 303 facing the mating cavity. The fixed seat 4 has a protruding seat 401 connected to the side facing the hollow cavity. The inflatable structure 7 includes an inflation hole 701 provided in the protruding seat. The front end of the inflation hole is provided with a first sealing screw 702. The movable base 301 and the fixed seat are connected at the edge by a corrugated pipe 8.

[0025] Furthermore, the fixed seat is provided with three claws 9 in the circumferential direction, and the claws 9 are embedded in the matching grooves 10 at the connection between the inlet valve body and the outlet valve body.

[0026] Furthermore, the inlet valve body 1 and the outlet valve body 2 are connected by welding.

[0027] Furthermore, a spring adjustment seat 11 and a spring 12 are provided in the hollow cavity outside the protruding seat, and a support seat 14 is provided at the bottom of the mating cavity to ensure that the fixed seat and the movable seat do not separate in the initial state, i.e., the uninflated state.

[0028] Furthermore, a second sealing screw 703 is provided at the rear end of the inflation hole to further seal the inflation hole and prevent gas leakage.

[0029] Preferably, a support ring 13 is provided between the support base and the protruding base.

[0030] Furthermore, a bellows support ring 15 is provided at the connection between the fixing seat and the bellows.

[0031] Working principle:

[0032] First, pressurize the space between the fixed and movable seats with gas of a fixed pressure through the inflation port, and then tighten the first and second sealing screws. Next, when high-pressure gas enters the inlet channel, it is throttled and depressurized at the throttling orifice. The throttled pressure acts on the movable seat. When the outlet channel pressure is high, the force acting on the movable seat increases, causing the lifting valve core to move to the right. This movement of the lifting valve core to the right reduces the throttling orifice size, thus lowering the pressure. When the outlet channel pressure decreases, the force acting on the movable seat decreases, causing the valve seat to move to the left. This leftward movement increases the throttling orifice area, causing the outlet channel pressure to gradually increase. The movable seat continues this reciprocating motion to maintain a balanced outlet channel pressure.

[0033] In summary, this application has a simple structure. The movable seat and the fixed seat are connected by a bellows. By sensing the gas pressure in the outlet flow channel, the pressure is promptly fed back to the movable seat inside the pressure regulating valve, enabling the lifting valve core and valve seat to respond quickly and accurately adjust the size of the throttling orifice, thereby adjusting the inlet flow channel pressure and achieving balanced control of the outlet flow channel pressure.

[0034] It should be noted that the accompanying drawings merely illustrate the technical concept of the present invention and should not be used to limit the scope of protection of the present invention. For those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and all such improvements and modifications fall within the scope of protection of the claims of the present invention.

Claims

1. A pressure regulating valve with a pneumatic pressure sensing component, characterized in that: The device includes an inlet valve body and an outlet valve body. The inlet valve body has an inlet flow channel at its front end and a protruding arc-shaped throttling orifice at its end. The outlet valve body has an outlet flow channel at its rear end. The inlet valve body has a movable seat inside, and the outlet valve body has a fixed seat inside. A lifting valve core is connected to the center of the movable seat away from the fixed seat. The lifting valve core extends into the inlet flow channel and is fixedly connected to a valve seat within the inlet flow channel. The valve seat has a conical surface at the end near the throttling orifice. An inflation structure is provided between the fixed seat and the movable seat. The fixed seat and the movable seat are connected by a bellows at their outer edges.

2. A pressure regulating valve with a pneumatic pressure sensing component according to claim 1, characterized in that: The movable seat includes a movable base and a movable cavity. The fixed seat has a mating cavity that matches the movable cavity. The movable cavity has a hollow cavity facing the mating cavity. The fixed seat has a protruding seat connected to the side facing the hollow cavity. The inflation structure includes an inflation hole provided in the protruding seat. The front end of the inflation hole is provided with a first sealing screw. The movable base and the fixed seat are connected at the edge by a corrugated pipe.

3. A pressure regulating valve with a pneumatic pressure sensing component according to claim 1, characterized in that: The fixed seat is provided with three claws around its circumference, and the claws are embedded in matching slots at the connection between the inlet valve body and the outlet valve body.

4. A pressure regulating valve with a pneumatic pressure sensing component according to claim 1, characterized in that: The inlet valve body and the outlet valve body are connected by welding.

5. A pressure regulating valve with a pneumatic pressure sensing component according to claim 2, characterized in that: The hollow cavity outside the protruding seat is provided with a spring adjustment seat and a spring, and the spring adjustment seat and the bottom of the mating cavity are provided with a support seat.

6. A pressure regulating valve with a pneumatic pressure sensing component according to claim 2, characterized in that: A second sealing screw is provided at the rear end of the inflation hole to further seal the inflation hole and prevent gas leakage.

7. A pressure regulating valve with a pneumatic pressure sensing component according to claim 5, characterized in that: A support ring is provided between the support base and the protruding base.

8. A pressure regulating valve with a pneumatic pressure sensing component according to claim 1 or 2, characterized in that: A bellows support ring is provided at the connection between the fixed base and the bellows.

Images